PN Junction Diode Multiple Choice Questions Answers

16. A reverse-biased PN junctions has

   A.A net electron current

   B.A net hole current

   C.A very narrow depletion layer

   D.Almost zero current

17. The depletion layer of a PN junction diode has

   A.Only free mobile holes

   B.Only free mobile electrons

   C.Both free mobile holes as well as electrons

   D.Neither free mobile electrons nor holes

18. The depletion region of a PN junction is one that is depleted of

   A.Immobile charges

   B.Mobile charges

   C.Atoms

   D.None of the above

19. The potential barrier existing across a PN junction corresponds to

   A.Width of the barrier

   B.Reverse bias of the junction

   C.Forward bias of the junction

   D.Height of the barrier

20. Mobile electrons of P-side of the PN junction diode constitute

   A.Minority current carriers

   B.Majority current carriers

   C.Depending upon voltage they may be either majority or minority current carriers

   D.None of the above

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